Feeling the Humidity? Here’s How to Stay Hydrated

THOUSAND PALMS, Calif. (KESQ)- As temperatures remain high across the Coachella Valley, humidity can add another challenge for people spending time outdoors.

When humidity rises, sweat has a harder time evaporating off the skin. That matters because evaporation is one of the main ways the body cools itself. Even though sweat may not evaporate as easily in humid conditions, the body can continue sweating and losing fluids.

A 2026 study looking at people exercising in 95-degree conditions found that about 89% of sweat effectively evaporated at 15% humidity. At 75% humidity, that dropped to about 45%.

The National Institute for Occupational Safety and Health says high humidity can make it harder for sweat to evaporate, while continued sweating can increase fluid loss and the risk of dehydration and heat-related illness.

NIOSH recommends people doing moderate activity in the heat for less than two hours drink about eight ounces of water every 15 to 20 minutes.

But how should you change the way you hydrate when humidity rises? And when should you reach for electrolytes instead of just water?

News Channel 3 is speaking with a registered dietitian about what you should drink and eat during humid weather, the signs you may not be getting enough fluids and who may need to be especially careful.

Watch News Channel 3 at 5 for what you need to know about staying hydrated when the Valley gets hot and humid.